TL;DR
- •Restlessness is the distressing sense of being unable to relax or stay still — it can be physical (needing to move, pace, fidget), inner (a churning mental agitation), or both.
- •It is a symptom, not a diagnosis, and the cause matters: anxiety, depression (agitated depression), ADHD, substance withdrawal, hyperthyroidism, and medication side effects can all produce it.
- •A specific, often-missed cause is akathisia — a drug-induced movement side effect (commonly from antipsychotics, sometimes antidepressants) producing an intense urge to move; it is treatable and frequently mistaken for worsening anxiety.
- •Restlessness paired with racing thoughts, reduced need for sleep, and elevated mood can signal a manic or mixed state and warrants prompt evaluation.
- •Treatment follows the cause: treating the anxiety, depression, or ADHD; adjusting a culprit medication; or addressing a medical driver.
- •When restlessness is part of agitated treatment-resistant depression, ketamine may help — but agitation calls for careful assessment first.
What this can look like
- •You physically cannot get comfortable — you pace, fidget, shift, or feel you have to keep moving
- •Your mind churns even when your body is still, with a sense of urgency that has no clear object
- •Sitting through a meal, a meeting, or a quiet evening feels almost unbearable
- •The feeling is worse when you try to rest, and it interferes with sleep
- •It can come with irritability, a sense of dread, or feeling "wound up"
Commonly associated with
This is descriptive, not diagnostic. Having this symptom doesn’t mean you have any of these conditions — only a clinician can make that determination.
Anxiety disorders
Restlessness and feeling "keyed up" are core diagnostic features of generalized anxiety.
Depression (agitated subtype)
Some depression presents with agitation and restlessness rather than slowing down.
Akathisia (medication-induced)
A distressing inner restlessness and compulsion to move caused by certain medications — especially antipsychotics, sometimes antidepressants; frequently misattributed to anxiety.
ADHD
Physical restlessness and an inner "motor running" are common, especially in adults.
Withdrawal, hyperthyroidism, and stimulants
Substance withdrawal, an overactive thyroid, caffeine, and stimulant medications can all drive restlessness.
Self-help patterns
Patterns that may complement professional treatment — not substitutes for it.
- •Track timing and context — did it start with a new medication, a dose change, caffeine, or a stressful period? The pattern points to the cause
- •Reduce stimulants (caffeine, nicotine) and check whether a new medication lines up with onset
- •Use physical outlets: vigorous exercise can discharge restless energy; paced breathing can calm inner agitation
- •Protect sleep; sleep loss worsens both inner and physical restlessness
- •If restlessness began after starting a psychiatric medication, raise akathisia specifically with your prescriber — don't just push through it
When to seek professional help
- •Restlessness is persistent, distressing, or interfering with sleep, work, or daily life
- •It began or worsened after starting or changing a medication (possible akathisia — treatable)
- •It comes with racing thoughts, reduced need for sleep, and elevated or irritable mood (possible manic/mixed state — evaluate promptly)
- •It is paired with thoughts of self-harm — seek help immediately (call or text 988)
Treatment options
Treatment depends entirely on the cause. Anxiety-driven restlessness responds to therapy (CBT) and, when needed, medication; depression-related agitation is treated as part of the depression; ADHD restlessness improves with ADHD-specific treatment. If a medication is the culprit — particularly akathisia from an antipsychotic or, less often, an antidepressant — the answer is to adjust the offending drug and, where appropriate, add a targeted treatment for akathisia rather than simply piling on sedatives. Medical drivers (hyperthyroidism, withdrawal, excess caffeine or stimulants) are addressed directly. Recognizing akathisia specifically matters, because it is treatable and is frequently mistaken for the very anxiety the medication was meant to help.
Where ketamine fits
Ketamine is not a treatment for restlessness as a symptom, and the first task is always to identify the cause — anxiety, agitated depression, ADHD, a medication effect like akathisia, or a medical driver. Ketamine becomes relevant only when restlessness is part of a treatment-resistant depression (including agitated depression), where it can address the underlying mood disorder. A caution specific to agitation: marked agitation, racing thoughts, and reduced need for sleep can indicate a manic or mixed state, in which an antidepressant-like intervention is the wrong move — so careful assessment of bipolarity comes first. Where restlessness reflects medication-induced akathisia, the right answer is adjusting that medication, not ketamine.
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Frequently asked
What's the difference between restlessness and anxiety?
Restlessness is one possible symptom of anxiety, but it has other causes too — agitated depression, ADHD, an overactive thyroid, withdrawal, and importantly medication side effects (akathisia). Because the cause changes the treatment, identifying what's driving it matters more than the label.
Could my medication be causing it?
Yes, and this is commonly missed. Akathisia is a drug-induced restlessness and urge to move — most often from antipsychotics, sometimes antidepressants — that feels like intense inner agitation. It's treatable, but only if recognized rather than mistaken for worsening anxiety. Raise it specifically with your prescriber.
When is restlessness an emergency?
Restlessness with racing thoughts, little need for sleep, and elevated or irritable mood can signal a manic or mixed state and should be evaluated promptly. Restlessness with thoughts of self-harm needs urgent help — call or text 988.
Can ketamine help restlessness?
Only indirectly, and only when restlessness is part of a treatment-resistant depression. Agitation also requires ruling out a manic/mixed state first. If the cause is medication-induced akathisia, adjusting that medication — not ketamine — is the fix.
References
- Zareifopoulos N et al. 2021, European Review for Medical and Pharmacological Sciences. Review of the pathophysiology and management of akathisia — a frequently-missed, treatable cause of distressing restlessness. PMID 34337722
- Murrough JW et al. 2013, American Journal of Psychiatry. Ketamine RCT in treatment-resistant depression — the disorder (including its agitated form) in which restlessness may be a target. PMID 23982301
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